/*
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* poll_thread.h - poll thread for event and buffer
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*
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* Copyright (c) 2014-2015 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Author: Wind Yuan <feng.yuan@intel.com>
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*/
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#ifndef XCAM_POLL_THREAD_H
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#define XCAM_POLL_THREAD_H
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#include <xcam_std.h>
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#include <xcam_mutex.h>
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#include <x3a_event.h>
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#include <v4l2_buffer_proxy.h>
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#include <x3a_stats_pool.h>
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#include <v4l2_device.h>
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#include <stats_callback_interface.h>
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namespace XCam {
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class PollCallback
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{
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public:
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PollCallback () {}
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virtual ~PollCallback() {}
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virtual XCamReturn poll_buffer_ready (SmartPtr<VideoBuffer> &buf) = 0;
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virtual XCamReturn poll_buffer_failed (int64_t timestamp, const char *msg) = 0;
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private:
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XCAM_DEAD_COPY (PollCallback);
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};
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class V4l2Device;
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class V4l2SubDevice;
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class EventPollThread;
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class CapturePollThread;
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class PollThread
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{
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friend class EventPollThread;
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friend class CapturePollThread;
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friend class FakePollThread;
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public:
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explicit PollThread ();
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virtual ~PollThread ();
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bool set_capture_device (SmartPtr<V4l2Device> &dev);
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bool set_event_device (SmartPtr<V4l2SubDevice> &sub_dev);
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bool set_poll_callback (PollCallback *callback);
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bool set_stats_callback (StatsCallback *callback);
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virtual XCamReturn start();
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virtual XCamReturn stop ();
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protected:
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XCamReturn poll_subdev_event_loop ();
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virtual XCamReturn poll_buffer_loop ();
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virtual XCamReturn handle_events (struct v4l2_event &event);
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XCamReturn handle_3a_stats_event (struct v4l2_event &event);
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private:
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virtual XCamReturn init_3a_stats_pool ();
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virtual XCamReturn capture_3a_stats (SmartPtr<X3aStats> &stats);
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private:
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XCAM_DEAD_COPY (PollThread);
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private:
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static const int default_subdev_event_timeout;
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static const int default_capture_event_timeout;
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SmartPtr<EventPollThread> _event_loop;
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SmartPtr<CapturePollThread> _capture_loop;
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SmartPtr<V4l2SubDevice> _event_dev;
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SmartPtr<V4l2Device> _capture_dev;
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PollCallback *_poll_callback;
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StatsCallback *_stats_callback;
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};
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};
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#endif //XCAM_POLL_THREAD_H
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